> cost of writing after a snapshot is the same as before the snapshot
I didn't understand this, could you please clarify?
If there was no snapshot, there would be only one write operation, the actual write. However, with snapshot in place, in addition to actual write, there is a copy operation which copies the original data and writes to snapshot location. So, there should be two write operations (actual + copy).
I didn't understand this, could you please clarify?
If there was no snapshot, there would be only one write operation, the actual write. However, with snapshot in place, in addition to actual write, there is a copy operation which copies the original data and writes to snapshot location. So, there should be two write operations (actual + copy).